T-R1L1S1N - Negative Combined Resolution and Distortion Test Target, 18 mm Square
T-R1L1S1N - Negative Combined Resolution and Distortion Test Target, 18 mm Square
- Measure Image Distortion, Astigmatism, and Other Aberrations
- 18 mm (0.71") Square, 1.5 mm Thick Target
- Determine Resolution of an Optical System
- Includes 1951 USAF Pattern, Sector Star, Concentric Circles, Grids, and Ronchi Rulings
- Positive and Negative Targets Available
| Target Feature | Details | Target Feature | Details |
|---|---|---|---|
| 1951 USAF Target | Groups 2 - 7 | Concentric Circles | 10 Circles with Radii from 100 µm to 1000 µm in 100 µm Intervals, Labeled 1 to 10 |
| Grids | 20 x 20 Arrays with 100 µm, 50 µm, and 10 µm Pitch | Ronchi Rulings | 13 Rulings from 30 lp/mm to 150 lp/mm in 10 lp/mm Intervals |
| Sector Star | 36 Bars through 360°, 10 µm Radius Center Circle, and Ten Concentric Circles with Radii from 50 µm to 500 µm in 50 µm Intervals | ||
| Optical Specifications | ||
|---|---|---|
| Item # | T-R1L1S1P | T-R1L1S1N |
| Pattern | LR Chrome | Clear |
| Background | Clear | LRa Chrome |
| Surface Flatness | ≤15 µm | |
| Chrome Optical Density | ≥3.0 | |
NOTES/SPECIFICATIONS:
1. MATERIAL: SODA LIME
2. COATING: OD3 LOW-REFLECTIVITY CHROME
3. FACE DIMENSION TOLERANCE: 0.75 mm
4. THICKNESS TOLERANCE: 0.25 mm
5. SURFACE FLATNESS: ≤15 µm
6. OPTICAL DENSITY: ≥3.0 AT 430 nm
7. R1L1S1N IS A NEGATIVE RETICLE WITH DARK BACKGROUND AND CLEAR PATTERNS